EPA announced on June 15 the release of two databases — the Toxicity Forecaster database (ToxCastDB) and a database of chemical exposure studies ExpoCastDB (ExpoCastDB) — that scientists and the public can use to access chemical toxicity and exposure data. ToxCastDB users can search and download data from over 500 rapid chemical tests conducted on more than 300 environmental chemicals. ToxCastDB uses advanced scientific tools to predict the potential toxicity of chemicals and to provide a cost-effective approach to prioritizing which chemicals of the thousands in use require further testing. ToxCastDB is currently screening 700 additional chemicals, and the data will be available in 2012. ExpoCastDB consolidates human exposure data from studies that have collected chemical measurements from homes and child care centers. Data include the amounts of chemicals found in food, drinking water, air, dust, indoor surfaces and urine. ExpoCastDB users can obtain summary statistics of exposure data and download datasets. EPA will continue to add internal and external chemical exposure data and advanced user interface features to ExpoCastDB.